PHILADELPHIA (KYW Newsradio) — There’s a $60,000 reward as Philadelphia Police try to find whoever was involved in a triple murder in the Tioga section of the city over the weekend.

Homicide Captain Jack Ryan says there was a violent struggle in the house, and someone, or possibly more than one person, killed 92-year-old Warren Harrison, his 60-year-old girlfriend Kadijah Abdullah and her 57-year-old brother, Earl Cottle.

"We don’t believe it was committed by a stranger. We believe it was committed by someone who’s known to them who was let inside the house," Ryan said Monday.

Police Commissioner Richard Ross says anyone who has any bit of info needs to give them a call because, in his words, there's a person (or people) out there who has no regard for human life.

"Whoever the offender or offenders are, we need to get them in custody as soon as possible," Ross said Monday morning.

On Saturday night police say Harrison's daughter called 911 when she came home after being away for a few days and found the place ransacked..

When officers arrived, at 19th and West Venango streets, police say they found the three victims, their bodies wrapped in blankets. They say there are signs of a violent struggle in the house, but no visible signs of forced entry.

The two men's bodies were found in the basement in the basement. Police say they were beaten to death. Abdullah's body was found on the second floor. Police say she was stabbed to death.

Ross says it's possible they had been dead since early Saturday or the day before.

"Talking to neighbors and piecing some things together, it's a possibility this may have occurred the day before or at least some 12-15 hours before," Ross said.

Authorities say robbery or burlgary was the motive. Items were taken from the home, but it is not yet clear what is missing.

There are no suspects. The house was also a boarding house. It's not ot clear if there was anyone else in house at the time of murders.